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W. S. HAMM AND W. F. STEWART. DEVICE FOR FoRM|NG,AssEMBL1NG, AND HOLDING SHEET METAL FORMS.

APPLICATION FILED APB.24, |916.

Patented July 8, 1919.

/Zg Ji UNITED STATES PATENT OFFICE..

WILLIAM S. HAMM, OF I-IUBBARD WOODS, AND WILBER F. STEWART, 0F (.'HIC-AGrO,v i

ILLINOIS, ASSIGNORS -TO THE ADAMS `c WESTLAKE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS. L

DEVICE FOR FORMING", ASSEMBLING, AND HOLDING SHEET-METAL FORMSI.

To all whom t may concern.' y Be it known that we, WiLnIAM S. HAMM and IVILBER F. STEWART, residents, respectively, of Hubbard Woods, county of Cook,

State of Illinois, and Chicago, county of Cook, State of Illinois, and citizens of the United States, have invented, jointly, certain Improvements in Devices for Forming, Assembling, and Holding .Sheet-,Metal Forms, of which the following is a specification, and which are illustrated in the accompanying drawings, forming a part thereof.

. The invention relates to devices for assembling and holdingfor subsequent operations thereon sheet metal forms; its object being to provide for convenience and accuracy in assembling sheet metal parts, particularly when the same are to be united by a soldering operation, and it consists b-roadly in a ring having an internal annular channel for receiving and positioning a band, a seat adjacent the channel for receiving and positioning a cylindrical part, and having other specific features as hereinafter described.

In the accompanying drawings,

Figures 1, 3 and 5 are plan views ofthe device showing three somewhat different forms;

Figs. 2 and 4 are sectional views on the lines 2-2 and L1--4, respectively, of Figs. 1 and 3;

Fig. 6 is a sectional view, partly in elevation, of the form shown in Fig. 5 taken on the line 6-6 of Fig. 5.

Fig. 7 is a detail of the band which the device is adapted to receive; and

Fig. 8 is a central transverse sectional View of the several forms of construction, the sheet metal forms adapted to be assembled and held thereby being shown partly in section.

In all of the different forms of construction the device comprises a main ring 10, having at one edge an instanding flange 11, its opposite edge being beveled inwardly, as shown at 12. The inner circumferential surface 13 of the ring 10 is parallel to its axis.

A second ring 14 of somewhat less diameter than the internal diameter of the ring 10, and also of less axial width than that ring, is provided with an instanding or radial flange 15, which is seated upon and secured tothe flange 11, the two rings being concentrically disposed and the space between Specicaton of Letters Patent.

Patented July s, .1919.

Application filed April 24, `191.6. Serial` No. 93,163.

them forming a` vchannel for receiving a band, such as "16, constituting one of the v sheet metal forms to be assembled and held.

The edge 17 of the vring 14, opposite to that from which the flange 15 projects, is radially flat and forms a shoulder upon which may be rseated the end of a cylindrical sheet metal form 18, to which the band 16 is adapted to be soldered.

The inner-l margin of the beveledvface 12 of the ring 10 vis spaced from the inner radial face of the flange 11 a distance as great, and preferably the same,`as thewidth of the band. 16. The two sheet metal forms being seated within the holder, as shown in Fig. 8, the band 16 overlaps to some extent the outerwall ofthe cylindrical form 18, the extent of this overlapping being determined by the di'erence in the axial width face of the cylindrical form 18 and vthe beveledface 12 of the ring10. Heat being applied, this solder is melted and flows between the band 16 and the cylinder. The

assembling and holding device is made of a metal which will endure lthe heat necessaryv to the soldering operation and to which the solder will not adhere.

When the band 16 is intended to be subsequently stripped from the cylinder, it is pro` vided with a tag 19 at one end and the holding device is provided with a recess, as 20, for receiving this tag and holdingit away from the body portion of the band in order that it may not be soldered thereto. The ring 10 is provided in its outer face with a boss 21 within which the recess is formed, in the construction illustrated in Fig. 1.

In the form of construction illustrated in Fig. 3, the recess for receiving the tag 19 takes the form of .a channel extending through the boss 21 and the body of the ring 10, and being tangential to the inner wall 13 of this ring.

In the construction shown in Fig. 5, the recess takes the form of a tangential channel 23 extending throughthe body of the ring 10, and the outer face 24 of the boss 21 is continued in line with this channel and may have at its outer en d a shoulder 25 against which the end of the tag is seated, thereby properly positioning the` band within the holder.

In the use or the forms shown in Figs. l and. 5, the band is inserted axially within the channel between the rings l0 and 14, its tag entering the recess or channel 20 or 23. When the holder takes the form illustrated in Fig. 3, the band may be inserted lengthwise through the channel 21 and into the channel between the two rings.

The device is made of ytwo parts secured together for convenience of ,manufacture vWhen secured together, as by means of screws, as shown, the two ringsform a unitary structure.l

In the use ofthe device lit is the practice to pass it and the forms to be united, when assembled therein, Athrough a heatedcliamber for the purpose` of melting the solder.

Vliile preferable forms of thelde'vice are shown, various changes in detail may be made without departing from the scope of 'the invention. Although thev device is shown as circular in lfo'r1'n,its shape will, of course, conform to that of the articles in connection with which it is to be used, whether they be circular, oblong, or or other configuration. l

We claim as our invention-f l. A device for soldering lap joints comprising va s'eat for the 'article to be soldered, a ring fortightly encircling the vupper inarvgin or the overlapping member of vthe joint adapted to extend to its upper edge, the

capre, 'dr this intent may te brained m forming in outline Lto tl're'article to be 'soldered 'and having an inner face forming a bearl ing surface for the article and adapted to eXte'n'd to its upper edge, the Vupper 'margin of the wall flaring outwardly to v'form with the article a Vchannel for `the reception fof solder.

i. An assembling mi hiaiag devieefor i sheet 'metal forms comprising, in combina tion, 'a ring having `its inner ajce parallel to its axis, an insta'nd'ing radialiiange at one margin and lits, "other margin outwardly jliare'd, an inner concentric ring seated 1upon "and secured tothe yflange "and having its outer yface parallel with and spaced apart from the inner iace :ofthe first-named rilfig, the width of the inner ring being 4less thaifi the inner 'straight portion ofthe outer ring, the 'outer ring Lhaving a channel through 'its body portion tangential to its inner lface.

WLiIAMS. HAMM., WLBER F. STEWART.

vel 'dents aaah, by tambin@ the "emmener df man.

Washingtnn, 1). -|c. 

